72505732332 has 48 divisors (see below), whose sum is σ = 188486871552. Its totient is φ = 21503954880.

The previous prime is 72505732331. The next prime is 72505732357. The reversal of 72505732332 is 23323750527.

It is not an unprimeable number, because it can be changed into a prime (72505732331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5837263 + ... + 5849670.

It is an arithmetic number, because the mean of its divisors is an integer number (3926809824).

Almost surely, 2^72505732332 is an apocalyptic number.

It is an amenable number.

72505732332 is an abundant number, since it is smaller than the sum of its proper divisors (115981139220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72505732332 is a wasteful number, since it uses less digits than its factorization.

72505732332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11686998 (or 11686996 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 39.

The spelling of 72505732332 in words is "seventy-two billion, five hundred five million, seven hundred thirty-two thousand, three hundred thirty-two".